Whenever I have my laptop plugged into the power adapter and external LCD (Samsung 216bw), the lcd monitor will flicker like crazy. These are horizontal lines that run up and down the face of the monitor. Now, the thing is it only happens when the computer is plugged in. On battery, the problem is solved, which points to an electrical disturbance problem. I'm on a U300-AY1. Anyone else find these issues, or better yet, find a solution?